Double-acting pump



(Hommel.) l y l Y I'. J. BROWN 8v A. 80S. ALLEN.

DOUBLE ACTING PUMP.

NO. 530,922. Patented Deo. 18.1894.

mammals PETERS no, Pnoroumo., wAsummoN. n, c.

UNITED STATES PATENT OFFrcn.v

FRANK J. BROWN, ALFRED ALLEN, AND SOLOMON'ALLEN, OF HALSTEAD, KANSAS.

DOUBLE-ACTING PUMP- SPECIFICATION forming part of Letters Patent No.530,922, dated December 18, 1894.

Application tiled October Z4, 1893.

To @all whom it may concernf a new and improved double-acting pump,

which is simple and durable in construction, and very effectiveinoperation.

The invention consists of certain parts and details, and combinations ofthe same, as will be hereinafter described and then pointed out in theclaims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a sectional side elevation of the improvement. Fig. 2 is asectional plan view of the same on the line 2-2 of Fig. l. Fig. 3 is aperspective View of the tightening flange; and Fig. 4 is a sectionalside elevation of a modified form of the improvement.

In the lower end of the tubular well casin g A is held a double cylinderB, B', formed with two differential bores, of which the upper end of thecylinder B discharges into the casing A, while in' the bottom of theother cylinder B is secured a plug C formed with an inlet opening Ccontrolled by a suction valve D1 extending into the cylinder B. The

lower end of the suction opening Oleads to a perforated cap E somewhatless in diameter than the casing A, as plainly illustrated in thedrawings, the said cap restingon the bottom of the well, the waterpassing through the perforations into the cap and through the opening Cpast the valve D into 'the lower end of the cylinder B whenever the pumpis on the up-stroke. i

In the cylinder B is arranged a plunger F connected by the hollow stemGwith a plunger H fitted to slidein the other cylinder B', the said stembeing open throughout its length from the bottom of the plunger F to theupper end of the plunger H. On the upper end of this stem G is arrangeda yvalve I which permits ythe water passing up the stem to dis- SerialNo. 483,937- (No model.)

charge into the upper end of the cylinder B. A rod .I is connected withthe hollow stem G and is coupled at its upper end to the lifting rod Kconnected with suitable machinery at the mouth of the well,.so as toimpart a reciprocating motion to the rod v.T stem G and plungers F and Hreciprocating in the cylinders B and B respectively.

The valves D and IA above mentioned are preferably of the constructionshown in section in Fig. 1, the valve D being provided with a perforatedkValve seat D having its upper face convex and resting with its bottomon a collar D2 set on top of the plug C and securedon the valve casingD3.

On the seat D is secured a stem D4on which is fitted to slide looselythe valve D5 concave at its bottom so as to snugly tit over the convextop surface of the seat D. By this ar.

rangement, any foreign substance seated between the valve seat' andvalve D5 is 'dislocated at the next up-stroke of the plunger F, whenwater is sucked into the lower end of the cylinder B, as the saidforeigny substance is washed down the convex surface of the seat D to bevfinally located on the plug C arranged a suitable distance below thesaid top surface of the seat D. The valve I previously mentioned is ofthe same construction as the valve D, so that further description of thesame is a space L formed between the cylinder B', the

casing A, the top of cylinder B and a ring N made of rubber or othersuitable compressible material. This ring N is fitted on the cylinder Bnear its upper end and rests on a washer O supported on lugs B3 castorsecured on the outside of the cylinder B.

On the top of the ringN presses a circular ring or flange P, formed witha cylinder or sleeve P extending upwardly and having its upper edgearranged spirally and notched as at P2, as plainly indicated in Fig. 3.This notched edge P2 extends under lugs B4 formed integral with theoutside of the cylinder B', so that when the iiange P is turned, it willbe forced downward owing to the spiral edge P2 passing under the lugsB4. These lugs form an abutment for the upper edge of the sleeve P. Bythis means the ring N is compressed so as to firmly engage, with itsouter peripheral surface, the inner face of the tubing A to form a tightjoint, and to securely hold the double cylinder firmly in place in thelower end of the casing A.

In order to turn the flange P from above we provide the latter with ayoke P3 formed in its middle with a notch P4 adapted to be engaged by atransversely-extending pin J held on the rod J, so that when the latteris forced downward and turned, the said pin engages the said notch P4and on further turning of the rod J, the yoke P2 is turned and with it,the angeP to compress the ring N, as above described.

The coupling of the rod J and rod K is preferably arranged as follows:On the upper end ofthe rod J is formed a square offset J2 having athreaded aperture engaged by the threaded end K ot` the rod K. The headK2 of the threaded end K' is made similar to the odset J2 so'that whenthe two rods are screwed together, the sides of the said head K2register with the sides of the oiset J2 and then a square sleeve K3 isslipped down over the said registering heads and offsets to securelylock the same in place. The lower end of the sleeve K3 rests on ashoulder J3 formed on the rod J, directly below the offset J2. It willbe seen that by this arrangement, the two rods J and K will be securelycoupled together, and the rod K can be turned from above to turn the rodJ in either direction for the purpose above described, without danger ofuncoupling the two rods.

The operation is as follows: When a reciprocating motion is given to theplungers F and H, and stem G, then the plunger F on the up-stroke drawsin water from the bottom of the casing past the suction valve D, asabove described, to fill the lower part of the cylinder B. Vater on topof the lower plunger F is forced through the openings B2 into the spaceLso as to fill the same. Now, when the plungers move downward, thesuction valve D is closed and all the water in the lower cylinder B isdischarged through the stem G into the upper end of the cylinder B', andas the lower cylinder B is approximately twice the size of the uppercylinder B', one-half of the water raised into the said upper cylinder Bwill be retained, while the other half flows into the casing A above thering N. Now, when the plungers are again moved upward, the upper valve Iis seated and the upper cylinder B is emptied of its water and the lowercylinder is tilled by the opening of the suction valve D and theentrance of water from the lower part of the casing A to the cylinder B.

As illustrated in Fig. 4f, the upper plunger is formed by the upper endof the stem G' carrying the lower plunger F operating in the largercylinder B5 between which and the small cylinder B6 is arranged a stufngbox H made of leather or other suitable material, and taking the placeof the plunger H. Otherwise the construction and operation are the sameas shown in Fig. 1 and described above.

Having thus fully described our invention, we claim as new and desire tosecure by Letters Patentl. The combination, with the cylinder, theplunger, the pump rod for operating the plunger, and the compressiblering encircling the cylinder and supported thereon, of a sleeve looselymounted on the cylinder, means for moving the sleeve longitudinally ofthe cylinder when it is turned thereon, to press on the said ring andexpand the same, and a connection between the sleeve and the pump rod tocouple them for simultaneous rotation, substantially as described.

2. In a pump, the combination, with the cylinder having two sets of lugson its outer surface, the lugs of one set being arranged in transversealignment with each other, and those of the second set being located outof the line of the first named set, of a compressible ring surroundingthe cylinder between the two sets of lugs, and adapted to be supportedon the set of transversely aligning lugs, a ange encircling the cylinderbetween the said sets of lugs and adapted for engagement with one sideof the compressible ring to press-it toward its support, and a sleeveinterposed between the said flange and the said second set of lugs, andformed with an inclined edge adapted for engagement with the said set oflugs, the sleeve being loosely mounted on the cylinder, as and for thepurpose set forth.

3. The combination, with the pump cylinder having projections on itsouter surface, the plunger, the pump rod for operating the IOO plunger,and the compressible ring encircling the cylinder and supported thereon,of a flange engaging the said compressible ring, a sleeve looselymounted on the cylinder and provided with an inclined edge engaging theprojections of the cylinder, said sleeve being adapted to press the saidiiange onto the compressible ring, a yoke connected to the sleeve toturn therewith, and provided with a notch, and a pin secured to `thepump rod and adapted for engagement with the said notch to couple theyoke and the pump rod for simultaneous rotation, substantially asdescribed.

FRANK J. BROWN. ALFRED ALLEN. SOLOMON ALLEN. Witnesses:

F. M. BONHAM, E. R. NASH.

IIO

